Help migrating from v1 to v2 Objective C

This I think is the basics of what I am attempting - hopefully it makes sense.  I am simply uploading the SQLITE db and files.

#import "AppDelegate.h"
#import "DropBoxViewController.h"
#import "LoadingView.h"
#import "ConvertNSDateToString.h"
//#import <DropboxSDK/DropboxSDK.h>

#import <ObjectiveDropboxOfficial/ObjectiveDropboxOfficial.h>

@interface DropBoxViewController ()  <UIAlertViewDelegate>

//@property (nonatomic, strong) DBRestClient *restClient;
@property (nonatomic, strong) DropboxClient *restClient;
@property (nonatomic, weak) LoadingView *loadingView;


@end

NSMutableArray *files = nil;

@implementation DropBoxViewController

- (void)viewDidLoad{
    [super viewDidLoad];
}
- (void) viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    self.restClient = [DropboxClientsManager authorizedClient];

    //self.restClient.delegate = self;
    if (!networkLost) {
        [self checkForBackups];
    }
}
- (void) checkForBackups {
    //Determine if backup exists
    if([DropboxClientsManager authorizedClient] != nil ) {      
        DropboxClient *client = [DropboxClientsManager authorizedClient];
        [[client.filesRoutes getMetadata:@""]response:^(DBFILESMetadata * _Nullable result, DBFILESGetMetadataError * _Nullable routeError, DBRequestError * _Nullable error) {
			//NOT SURE HOW TO CHECK THIS…
            //USED to be loadedMetadata
        }];
        [_loadingView removeView];
    }
}


- (IBAction)linkToDropBox:(id)sender {
    [DropboxClientsManager authorizeFromController:[UIApplication sharedApplication]
                                 controller:self
                                 openURL:^(NSURL *url) {
                                 	[[UIApplication sharedApplication] openURL:url];
                                 }
                                 browserAuth:YES];
    [self checkForBackups];
}
//TODO - FIX THIS COMMENT
/*
- (void)restClient:(DBRestClient *)client loadedMetadata:(DBMetadata *)metadata {
    if (metadata.isDirectory) {
        files = [[NSMutableArray alloc]init];
        for (DBMetadata *file in metadata.contents) {
            [files addObject:file];
        }
    }
    
    //check to see if there is a backup to restore
    for (DBMetadata *file in files) {
        if([file.path isEqualToString:@"/ServiceReport.sqlite"]){
            hasSQLBackup = YES;
        }
    }
    [self displayDropboxButtons];
}
*/

- (void) startBackUp {
    _loadingView = [LoadingView loadingViewInView:[self.view.window.subviews objectAtIndex:0] withMessage:@"Backing up data to Dropbox...."];
    [self uploadFileToDropbox:@"ServiceReport.sqlite"];
}

- (void) uploadFileToDropbox:(NSString*)fileName {
    NSString *rev = nil;
    //check to see if there is a backup to to overwrite
    
    //TODO - FIX THIS COMMENT
    /*
    for (DBMetadata *file in files) {
        if([file.filename isEqualToString:fileName]){
            rev = file.rev;
            break;
        }
    }
    
    NSString *localDir = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
    NSString *dbPath = [localDir stringByAppendingPathComponent:fileName];
    NSString *destDir = @"/";
    [self.restClient uploadFile:fileName toPath:destDir withParentRev:rev fromPath:dbPath];
     */
}

//TODO - FIX THIS COMMENT
/*
- (void)restClient:(DBRestClient *)client uploadedFile:(NSString *)destPath from:(NSString *)srcPath metadata:(DBMetadata *)metadata {
    NSLog(@"File uploaded successfully to path: %@", metadata.path);
}
 */

//This is the call to query for the file to restore and its call backs
//TODO - FIX THIS COMMENT

/*
- (void) startTheRestoreProcess {
    _loadingView = [LoadingView loadingViewInView:[self.view.window.subviews objectAtIndex:0] withMessage:@"Restoring from backup...."];
    //create the local path
    NSString *localDir = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
    NSString *localPath = [localDir stringByAppendingPathComponent:@"ServiceReport.bak"];
    [self.restClient loadFile:@"/ServiceReport.sqlite" intoPath:localPath];
}
- (void)restClient:(DBRestClient *)client loadedFile:(NSString *)localPath contentType:(NSString *)contentType metadata:(DBMetadata *)metadata {
    NSLog(@"File loaded into path: %@", localPath);
}
 */

/*
 This is the error handling form Dropbox Callbacks
 */
//TODO - FIX THIS COMMENT
/*
- (void)restClient:(DBRestClient *)client loadMetadataFailedWithError:(NSError *)error {
    NSLog(@"Error loading metadata: %@", error);
    [self showErrorMessage:error];
}
- (void)restClient:(DBRestClient *)client uploadFileFailedWithError:(NSError *)error {
    NSLog(@"File upload failed with error: %@", error);
    [self showErrorMessage:error];
}
- (void)restClient:(DBRestClient *)client loadFileFailedWithError:(NSError *)error {
    if (error.code == 404) {
        NSLog(@"Your file was not found");
        [self showErrorMessage:error];
    }else if (error.code == 401) {
        NSLog(@"Your account is no longer authorized.");
        [self showAccountNotLinked];
        
    }else {
        NSLog(@"NSError ** : %@", [error userInfo]);
        [self showErrorMessage:error];
    }
}
 */
- (void) relinkToDropbox {
    /*
    [[DBSession sharedSession] unlinkAll];
     */
    [DropboxClientsManager unlinkClients];
    _restClient = nil;
    [self linkToDropBox:nil];
}

@end